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GB 146.2-2020 PDF in English


GB 146.2-2020 (GB146.2-2020) PDF English
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GB 146.2-2020English125 Add to Cart 0-9 seconds. Auto-delivery. Gauge for standard gauge railways -- Part 2: Structure gauge Valid
GB 146.2-1983English70 Add to Cart 0-9 seconds. Auto-delivery. Structure gauge for standard gauge railways Obsolete
Standards related to (historical): GB 146.2-2020
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GB 146.2-2020: PDF in English

GB 146.2-2020 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 93.100 S 04 Replacing GB 146.2-1983 Gauge for standard gauge railways - Part 2: Structure gauge ISSUED ON: OCTOBER 11, 2020 IMPLEMENTED ON: MAY 01, 2021 Issued by: State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of Contents Foreword ... 3  1 Scope ... 5  2 Terms and definitions ... 5  3 General ... 5  4 v≤160 km/h passenger and freight railway structure gauge ... 6  5 v>160 km/h passenger and freight railway structure gauge ... 12  6 Passenger dedicated line structure gauge ... 14  Foreword GB 146, Gauge for standard gauge railways, is divided into two parts: -- Part 1: Rolling stock gauge; -- Part 2: Structure gauge. This Part is Part 2 of GB 146. This Part was drafted in accordance with the rules given in GB/T 1.1-2009. This Part replaces GB 146.2-1983, Structure gauge for standard gauge railways; compared with GB 146.2-1983, the main technical changes, except editorial changes, are as follows: -- Modify the name of the railway structure gauge to v ≤ 160 km/h passenger and freight railway structure gauge (see Chapter 4; Chapter 4 of version 1983); -- Modify the platform gauge height in the basic structure gauge (see Chapter 4; 4.1.1 of version 1983); -- For tunnel gauge-1 and tunnel gauge-2, add the lower contour line of newly-built tunnel at the lower gauge of 25 mm ~ 1 210 mm above the rail surface (see 4.2.1, 4.2.2; 4.2.1, 4.2.2 of version 1983); -- Delete tunnel gauge-1B, tunnel gauge 02B, bridge gauge-1B, bridge gauge-2B (see 4.2.1, 4.2.2, 4.3.1, and 4.3.2 of version 1983); -- Add v > 160 km/h passenger and freight railway structure gauge (see Chapter 5); -- Add the passenger dedicated line structure gauge (see Chapter 6); -- Delete the reference diagram of the pantograph position of electrified railway (see Appendix A of version 1983); -- Delete the reference diagram of the off-gauge goods loading gauge (see Appendix B of version 1983). This Part shall be under the jurisdiction of the National Railway Administration of the People’s Republic of China. The drafting organizations of this Part: China Academy of Railway Sciences Corporation Limited. Gauge for standard gauge railways - Part 2: Structure gauge 1 Scope This Part of GB 146 specifies the basic structure gauge, tunnel structure gauge, bridge structure gauge and bridge and tunnel structure gauge of 1 435 mm standard gauge railway tracks. This Part applies to the design, construction, operation and maintenance of the following standard gauge railway tracks: -- v ≤ 160 km/h passenger and freight railway; -- v > 160 km/h passenger and freight railway; -- Passenger dedicated railway. 2 Terms and definitions The following terms and definitions are applicable to this document. 2.1 Structure gauge The limit cross-sectional contour perpendicular to the center line of the track. Within this contour, except for rolling stock and the equipment interacting with rolling stock and related equipment (such as vehicle reducer, contact wire, hanging string, locator), other equipment or structures shall not be invaded. 2.2 Design speed The designed maximum travel speed of the train for the track. Note: The designed speed is expressed in kilometers per hour. 3 General 3.1 Whether it is a new rail or an old rail (including the long-term replacement of heavy rail thickened track beds), the structure gauge dimension that is calculated from the rail surface shall meet the requirements. 3.2 The dimensions on each structure gauge drawing of this Part are based on the track on the horizontal straight road. 3.3 The center distance of adjacent tracks in the curve part and the expanded distance from the center line of track to the structure shall be calculated according to the prescribed curve widening formula. 3.4 Due to the superelevation of the outer rail in the curve part, the vertical height of the structure gauge shall be calculated from the straight line that is formed by the highest points of the inner and outer rails; the horizontal dimension shall be calculated from the center line of the track. 4 v≤160 km/h passenger and freight railway structure gauge 4.1 Basic structure gauge 4.1.1 Structure gauge-1 4.1.1.1 The structure gauge-1 is the basic structure gauge of the v ≤ 160 km/h passenger and freight railway, as shown in Figure 1. Bridge structure gauge. The maximum height is calculated and determined according to the height of the overhead line system structure; the minimum shall not be less than 6 550 mm. Basic structure gauge. Lighting, communication, warning signals and color light signals can be installed between the basic structure gauge and the bridge structure gauge. Figure 6 -- Bridge gauge-2 4.3.3 Calculation of the widening amount of bridge structure gauge on the curve See 4.1.1.3 for the calculation method of the widening amount of bridge structure gauge on the curve. 5 v>160 km/h passenger and freight railway structure gauge 5.1 Basic structure gauge 5.1.1 Structure gauge-3 is the basic structure gauge of the v > 160 km/h passenger and freight railway, as shown in Figure 7. ......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.